The subscripts tell you <em>how many atoms</em> of an element are in one formula unit of a compound.
If there is no subscript, there is only one atom of the element.
In one formula unit of Na₂PO₃F, there are
Two atoms of sodium (Na)
One atom of phosphorus (P)
Three atoms of oxygen (O)
One atom of fluorine (F)
Answer:
Explanation:
A measurement is the action of measuring something, or some amount of stuff. So it is important to measure certain things right, distance, time, and accuracy are all great things to measure. By measuring these things or in other words, by taking these measurements we can better understand the world around us.
1. Constellations are group of <u>stars</u> that form pattems in the night sky
2. Ursa Major, Cassiopeia, and Orion are some common <u>constellations</u><u>.</u>
3. Stars are used to tell <u>directions</u> and time, predict weather, and to serve as birth sign.
